Plenty happened immediately before Young's one-out drive doomed Kevin Correia (1-3) to his second walkoff loss in three days. Correia also surrendered Shane Victorino's game-winning, ninth-inning homer Sunday at Philadelphia, five days after since-traded closer Armando Benitez yielded Carlos Delgado's tiebreaking homer in the 12th inning at New York.
The Giants nearly grabbed the lead in their half of the 10th. After Aurilia lashed a one-out double off reliever Brandon Lyon, Ray Durham lifted a fly ball to shallow left field, where Eric Byrnes dove to catch the ball but lost it as he slid belly-first on the grass. Third baseman Mark Reynolds alertly picked up the ball and fired it to third base, where Lyon was covering the bag. Aurilia, who hesitated in case Byrnes caught Durham's fly, didn't slide as he approached third and tumbled over Lyon, who tagged him out. Durham advanced to second base, but Bengie Molina's fly to deep center ended the threat.
Giants manager Bruce Bochy argued the Aurilia play vigorously with third-base umpire Alfonzo Marquez, but his venom was spent by the time the game ended.
"He was out. That's what [Marquez] explained," Bochy said. "From what I hear, he got the call right. Looking at it, it was hard to believe he was out, but I guess he was ... It's amazing that they got [Aurilia] out. That ball kicked away -- there was nobody at third for a while. It was a botched-up play that came out great on their side."
Television replays indicated that Lyon indeed made the tag in time for the out, but Aurilia hadn't reviewed the incident.
"Some of our guys said he went to defend himself with me falling on him and his glove may have gotten me," Aurilia said. When a reporter mentioned that Lyon was blocking the base, Aurilia observed, "That's why I didn't slide. I had nowhere to slide to. There was no base for me to get to."
Young soon followed with his seventh homer of the season on a hanging slider. "It wasn't a good pitch. It was definitely a mistake," Correia said. "That's what I expect him to do with that pitch."
Before Young batted, Correia retired four consecutive D-backs. "Just like two days ago, I felt great," Correia said. "One mistake can do that. If you're pitching in games that are tied late in the game like that, all it takes is one."
Young's homer, which kept Arizona in a virtual tie for first place in the National League West and dropped the Giants seven games back, nullified some admirable moments for San Francisco. Rookie Daniel Ortmeier hit a two-run, fourth-inning homer off future Hall of Famer Randy Johnson to tie the score. Kevin Frandsen, replacing sore-legged Barry Bonds in left field, threw out Johnson at third base in the fourth inning and dove to snare Orlando Hudson's sixth-inning blooper with two outs and a runner on second. Durham forged a 3-3 tie with an RBI double in the eighth.
But there weren't enough of those moments for the Giants.
"When you lose games on walkoff home runs, the game's determined elsewhere," Aurilia said. "Tonight, I think it was a sense of luck didn't fall our way."
The Giants typically turn to Bonds to improve their luck, but Bochy declined to use him as a pinch-hitter in the ninth inning when he had a chance. Bonds remained sitting while Eliezer Alfonzo batted with Omar Vizquel on first base and one out against rookie left-hander Doug Slaten. Alfonzo struck out.
"I thought about it," Bochy said when asked about using Bonds. "But Alfonzo's been swinging well."
Bonds said, "I feel better," regarding his health, but responded, "I don't know" when asked if he'll play Wednesday.